From the Leviathan to the Behemoth
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The world’s biggest telescopes are reflectors and every increase in size has given us a new perspective on the universe. The Rosse telescope, built in the middle of the nineteenth century by Lord Rosse in County Offaly, Ireland, was nicknamed the Leviathan of Parsonstown. It was the world’s biggest telescope for over half a century. Rosse’s drawings of the celestial objects that he viewed through the telescope were widely circulated. His drawing of the Whirlpool Galaxy is thought to have inspired Van Gogh’s painting Starry Night. The European Southern Observatory (ESO) is now constructing the Extremely Large Telescope (ELT) in Chile. It will be the largest telescope in the world when completed.